A2L Refrigerant Cylinder Handling, Storage, and Transportation 2

Question 1

What color coding identifies A2L refrigerant cylinders?

Accepted Answer

There is no universal color — cylinders are now painted light grey/silver per AHRI guidelines, with the refrigerant identified by label

Answer

Green for all A2L types

Answer

Red for flammable

Answer

Blue for all new refrigerants

Question 2

How must A2L refrigerant cylinders be stored at a job site?

Accepted Answer

Upright, in a well-ventilated area, away from heat sources and ignition sources, secured to prevent tipping

Answer

Anywhere convenient

Answer

Horizontally to prevent pressure buildup

Answer

In the trunk of the service vehicle at all times

Question 3

What is the maximum fill level for A2L refrigerant recovery cylinders?

Accepted Answer

80% of the cylinder's water capacity by weight

Answer

100% — fill them completely

Answer

60% maximum

Answer

50% for safety

Question 4

During transportation, A2L refrigerant cylinders must comply with which regulations?

Accepted Answer

DOT Hazardous Materials Regulations (49 CFR), including proper labeling, placarding for quantity thresholds, and securing in the vehicle

Answer

No transportation regulations apply

Answer

Only state-level regulations

Answer

Only airline cargo regulations

Question 5

A technician notices frost on an A2L refrigerant cylinder that was recently used. What does this indicate?

Accepted Answer

Rapid refrigerant withdrawal has cooled the cylinder below the dew point — this is normal but the cylinder should not be heated with an open flame

Answer

The cylinder is defective

Answer

The refrigerant has frozen solid

Answer

The cylinder is overfilled

Question 6

What must a technician verify about a recovery cylinder before using it for A2L refrigerant?

Accepted Answer

The cylinder is DOT-approved, within its retest date, rated for the specific refrigerant's pressure, and properly labeled for A2L use

Answer

Just that it's empty

Answer

Only that the valve works

Answer

That it matches the color of the original refrigerant